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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "multistringpostattribute.h"
#include "multi_string_enum_search_context.h"
#include <vespa/searchcommon/attribute/config.h>
#include <vespa/searchlib/query/query_term_simple.h>
namespace search {
template <typename B, typename T>
MultiValueStringPostingAttributeT<B, T>::MultiValueStringPostingAttributeT(const vespalib::string & name, const AttributeVector::Config & c)
: MultiValueStringAttributeT<B, T>(name, c),
PostingParent(*this, this->getEnumStore()),
_document_weight_attribute_adapter(*this)
{
}
template <typename B, typename T>
MultiValueStringPostingAttributeT<B, T>::MultiValueStringPostingAttributeT(const vespalib::string & name)
: MultiValueStringPostingAttributeT<B, T>(name, AttributeVector::Config(AttributeVector::BasicType::STRING, attribute::CollectionType::ARRAY))
{
}
template <typename B, typename T>
MultiValueStringPostingAttributeT<B, T>::~MultiValueStringPostingAttributeT()
{
this->disableFreeLists();
this->disable_entry_hold_list();
clearAllPostings();
}
class StringEnumIndexMapper : public EnumIndexMapper
{
public:
StringEnumIndexMapper(IEnumStoreDictionary & dictionary) : _dictionary(dictionary) { }
IEnumStore::Index map(IEnumStore::Index original) const override;
bool hasFold() const override { return true; }
private:
IEnumStoreDictionary& _dictionary;
};
template <typename B, typename T>
void
MultiValueStringPostingAttributeT<B, T>::
applyValueChanges(const DocIndices& docIndices, EnumStoreBatchUpdater &updater)
{
using PostingChangeComputer = PostingChangeComputerT<WeightedIndex, PostingMap>;
EnumStore &enumStore(this->getEnumStore());
IEnumStoreDictionary& dictionary(enumStore.get_dictionary());
StringEnumIndexMapper mapper(dictionary);
PostingMap changePost(PostingChangeComputer::compute(this->getMultiValueMapping(), docIndices,
enumStore.get_folded_comparator(), mapper));
this->updatePostings(changePost);
MultiValueStringAttributeT<B, T>::applyValueChanges(docIndices, updater);
}
template <typename B, typename T>
void
MultiValueStringPostingAttributeT<B, T>::freezeEnumDictionary()
{
this->getEnumStore().freeze_dictionary();
}
template <typename B, typename T>
void
MultiValueStringPostingAttributeT<B, T>::mergeMemoryStats(vespalib::MemoryUsage &total)
{
auto& compaction_strategy = this->getConfig().getCompactionStrategy();
total.merge(this->_postingList.update_stat(compaction_strategy));
}
template <typename B, typename T>
void
MultiValueStringPostingAttributeT<B, T>::reclaim_memory(generation_t oldest_used_gen)
{
MultiValueStringAttributeT<B, T>::reclaim_memory(oldest_used_gen);
_postingList.reclaim_memory(oldest_used_gen);
}
template <typename B, typename T>
void
MultiValueStringPostingAttributeT<B, T>::before_inc_generation(generation_t current_gen)
{
_postingList.freeze();
MultiValueStringAttributeT<B, T>::before_inc_generation(current_gen);
_postingList.assign_generation(current_gen);
}
template <typename B, typename T>
std::unique_ptr<attribute::SearchContext>
MultiValueStringPostingAttributeT<B, T>::getSearch(QueryTermSimpleUP qTerm,
const attribute::SearchContextParams & params) const
{
using BaseSC = attribute::MultiStringEnumSearchContext<T>;
using SC = attribute::StringPostingSearchContext<BaseSC, SelfType, int32_t>;
bool cased = this->get_match_is_cased();
auto doc_id_limit = this->getCommittedDocIdLimit();
BaseSC base_sc(std::move(qTerm), cased, params.fuzzy_matching_algorithm(), *this, this->_mvMapping.make_read_view(doc_id_limit), this->_enumStore);
return std::make_unique<SC>(std::move(base_sc), params.useBitVector(), *this);
}
template <typename B, typename T>
vespalib::datastore::EntryRef
MultiValueStringPostingAttributeT<B, T>::DocumentWeightAttributeAdapter::get_dictionary_snapshot() const
{
const IEnumStoreDictionary& dictionary = self._enumStore.get_dictionary();
return dictionary.get_frozen_root();
}
template <typename B, typename T>
IDocumentWeightAttribute::LookupResult
MultiValueStringPostingAttributeT<B, T>::DocumentWeightAttributeAdapter::lookup(const LookupKey & key, vespalib::datastore::EntryRef dictionary_snapshot) const
{
const IEnumStoreDictionary& dictionary = self._enumStore.get_dictionary();
vespalib::stringref keyAsString = key.asString();
// Assert the unfortunate assumption of the comparators.
// Should be lifted once they take the length too.
assert(keyAsString.data()[keyAsString.size()] == '\0');
auto comp = self._enumStore.make_folded_comparator(keyAsString.data());
auto find_result = dictionary.find_posting_list(comp, dictionary_snapshot);
if (find_result.first.valid()) {
auto pidx = find_result.second;
if (pidx.valid()) {
const PostingList &plist = self.getPostingList();
auto minmax = plist.getAggregated(pidx);
return LookupResult(pidx, plist.frozenSize(pidx), minmax.getMin(), minmax.getMax(), find_result.first);
}
}
return LookupResult();
}
template <typename B, typename T>
void
MultiValueStringPostingAttributeT<B, T>::DocumentWeightAttributeAdapter::collect_folded(vespalib::datastore::EntryRef enum_idx, vespalib::datastore::EntryRef dictionary_snapshot, const std::function<void(vespalib::datastore::EntryRef)>& callback) const
{
const IEnumStoreDictionary &dictionary = self._enumStore.get_dictionary();
dictionary.collect_folded(enum_idx, dictionary_snapshot, callback);
}
template <typename B, typename T>
void
MultiValueStringPostingAttributeT<B, T>::DocumentWeightAttributeAdapter::create(vespalib::datastore::EntryRef idx, std::vector<DocumentWeightIterator> &dst) const
{
assert(idx.valid());
self.getPostingList().beginFrozen(idx, dst);
}
template <typename B, typename M>
DocumentWeightIterator
MultiValueStringPostingAttributeT<B, M>::DocumentWeightAttributeAdapter::create(vespalib::datastore::EntryRef idx) const
{
assert(idx.valid());
return self.getPostingList().beginFrozen(idx);
}
template <typename B, typename M>
bool
MultiValueStringPostingAttributeT<B, M>::DocumentWeightAttributeAdapter::has_weight_iterator(vespalib::datastore::EntryRef idx) const noexcept
{
return self.getPostingList().has_btree(idx);
}
template <typename B, typename M>
std::unique_ptr<queryeval::SearchIterator>
MultiValueStringPostingAttributeT<B, M>::DocumentWeightAttributeAdapter::make_bitvector_iterator(vespalib::datastore::EntryRef idx, uint32_t doc_id_limit, fef::TermFieldMatchData &match_data, bool strict) const
{
return self.getPostingList().make_bitvector_iterator(idx, doc_id_limit, match_data, strict);
}
template <typename B, typename T>
const IDocumentWeightAttribute *
MultiValueStringPostingAttributeT<B, T>::asDocumentWeightAttribute() const
{
// TODO: Add support for handling bit vectors too, and lift restriction on isFilter.
if (this->hasWeightedSetType() && this->isStringType() && ! this->getIsFilter()) {
return &_document_weight_attribute_adapter;
}
return nullptr;
}
} // namespace search
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